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An Overview of the Node Package Manager

NPM is a package management and distribution system for Node. It has become the de-facto standard for distributing modules (packages) for use with Node. Conceptually it's similar to tools like apt-get (Debian), rpm/yum (Redhat/Fedora), MacPorts (Mac OS X), CPAN (Perl), or PEAR (PHP). It's purpose is publishing and distributing Node packages over the Internet using a simple command-line interface. With npm you can quickly find packages to serve specific purposes, download them, install them, and manage packages you've already installed. npm defines a package format for Node largely based on the CommonJS Package spec.